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| author | brian m. carlson <sandals@crustytoothpaste.net> | 2019-10-16 23:45:34 +0000 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2019-10-17 16:08:22 +0900 |
| commit | 6f1194246a514ba093a11dde73aabe4c0da5526f (patch) | |
| tree | c77e309f8c9b926709aeb15bc3a13baa08f149e2 /t/t5541-http-push-smart.sh | |
| parent | 5fa0f5238b0cd46cfe7f6fa76c3f526ea98148d9 (diff) | |
| download | git-6f1194246a514ba093a11dde73aabe4c0da5526f.tar.gz | |
remote-curl: pass on atomic capability to remote side
When pushing more than one reference with the --atomic option, the
server is supposed to perform a single atomic transaction to update the
references, leaving them either all to succeed or all to fail. This
works fine when pushing locally or over SSH, but when pushing over HTTP,
we fail to pass the atomic capability to the remote side. In fact, we
have not reported this capability to any remote helpers during the life
of the feature.
Now normally, things happen to work nevertheless, since we actually
check for most types of failures, such as non-fast-forward updates, on
the client side, and just abort the entire attempt. However, if the
server side reports a problem, such as the inability to lock a ref, the
transaction isn't atomic, because we haven't passed the appropriate
capability over and the remote side has no way of knowing that we wanted
atomic behavior.
Fix this by passing the option from the transport code through to remote
helpers, and from the HTTP remote helper down to send-pack. With this
change, we can detect if the server side rejects the push and report
back appropriately. Note the difference in the messages: the remote
side reports "atomic transaction failed", while our own checking rejects
pushes with the message "atomic push failed".
Document the atomic option in the remote helper documentation, so other
implementers can implement it if they like.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t5541-http-push-smart.sh')
| -rwxr-xr-x | t/t5541-http-push-smart.sh | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/t/t5541-http-push-smart.sh b/t/t5541-http-push-smart.sh index b86ddb60f2..3aec962cd8 100755 --- a/t/t5541-http-push-smart.sh +++ b/t/t5541-http-push-smart.sh @@ -184,11 +184,12 @@ test_expect_success 'push --atomic also prevents branch creation, reports collat test_config -C "$d" http.receivepack true && up="$HTTPD_URL"/smart/atomic-branches.git && - # Tell "$up" about two branches for now + # Tell "$up" about three branches for now test_commit atomic1 && test_commit atomic2 && git branch collateral && - git push "$up" master collateral && + git branch other && + git push "$up" master collateral other && # collateral is a valid push, but should be failed by atomic push git checkout collateral && @@ -226,6 +227,41 @@ test_expect_success 'push --atomic also prevents branch creation, reports collat grep "^ ! .*rejected.* collateral -> collateral .*atomic push failed" output ' +test_expect_success 'push --atomic fails on server-side errors' ' + # Use previously set up repository + d=$HTTPD_DOCUMENT_ROOT_PATH/atomic-branches.git && + test_config -C "$d" http.receivepack true && + up="$HTTPD_URL"/smart/atomic-branches.git && + + # break ref updates for other on the remote site + mkdir "$d/refs/heads/other.lock" && + + # add the new commit to other + git branch -f other collateral && + + # --atomic should cause entire push to be rejected + test_must_fail git push --atomic "$up" atomic other 2>output && + + # the new branch should not have been created upstream + test_must_fail git -C "$d" show-ref --verify refs/heads/atomic && + + # upstream should still reflect atomic2, the last thing we pushed + # successfully + git rev-parse atomic2 >expected && + # ...to other. + git -C "$d" rev-parse refs/heads/other >actual && + test_cmp expected actual && + + # the new branch should not have been created upstream + test_must_fail git -C "$d" show-ref --verify refs/heads/atomic && + + # the failed refs should be indicated to the user + grep "^ ! .*rejected.* other -> other .*atomic transaction failed" output && + + # the collateral failure refs should be indicated to the user + grep "^ ! .*rejected.* atomic -> atomic .*atomic transaction failed" output +' + test_expect_success 'push --all can push to empty repo' ' d=$HTTPD_DOCUMENT_ROOT_PATH/empty-all.git && git init --bare "$d" && |